Reversing-valve mechanism



Aug. 19 1924.

N. F. EGLER HEVERSING VALVE MEcHANIsM 1923 2 Sheets-Sheet l Filed June1,

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` INVENTOR Aug. 19, 1924. 1,505,630

N. F. EGLER REVERS ING VALVE MEQHAN SM Filed June 1, 1923 Shoots-Sheet 2FIG. 2

@WQ-W Patented Aug. 19, 1924.

f istante NICHOLAS F.' EGLER, OFGHICAGO, ILLINOIS.

nEvEnsrNG-venvn M-ncrramsraj Application filed June 1,

To all whom t may concerne: z

Be it known that I, Nrorronas F.y EGLER, a citizen of the United States,andresident of Chicago, in the country of Cook and State of Illinois,have invented a new and useful In'iprovement in Reversing-ValveMechanism, and I do hereby declare the following to vbe a full, clear,and exactdescription thereof. f K

My invention relates to a reversing valve mechanism for use inconnectionwith open hearth or like furnaces. f

I-Ieretofore it has been generally custom-y ary to employ a pair ofvalves usually of the mush-room type, the valvesbeing so arranged thatwhen one is open ther other is` closed. The open valve is in the directline of the hot gases, and is subjectedto an in tense heat which reducesthe life ofthe valve and makes repairs and substitutions of frequentoccurrence.M

The object of my invention is to"provide a construction in which asinglevalve is em f ployed covering' only onev flue at a time, the said valvebeing always in closed position and low down in its seat, so that ityis'not in the direct path of the hot gases, consequently is notsubjected to the wear and tear caused by the intense heat.

In the accompanying drawing, Fig. 1 is a vertical elevation of a portionvof a suitable furnace showing my invention applied thereto; and Fig. 2is a section'on the line 2 2, Fig. 1. i

In the drawings the numeral 2 designates the gas inlet flue, 3 thestack-flue and 4; the furnace-fine. A. hood or boX A providedy forcovering the above-designated fines, and by means of which the reversingof the gas or air and the waste gases is accomplished under a singlehood or box. n

The reversing valve 5 is preferably of a low flat construction, and maybe water-v cooled as illustrated, or if desired may be formed of ahighly refractory material. The valve is provided with the flaringportion 6 which is adapted to enter one of the water-seal wells 7surrounding the flues 2 and 3.

Vhere the water-cooled valve is employed a flexible pipe 8 isemployed-which permits of the movement of the valve from one flue to theother as will more fully hereinafter appear. The pipe 8 is connected upto any suitable source of supply.

The valve 5 is provided with the lugs 9` `1923. .serial` Nofeaavso;

which are provided with recesses 10 to receive the tip-turned armsI 11of the yokes 12. The otherfarms 13 of the yokes carry the rollers 14which are adapted to travel on the arc-shaped tracks 15.

To provide forthe shifting of the valve from rone fluetoanother, levers16 are employed, said levers being connected at their inner ends to ytherock shaft' 17 Amounted in bearingsl. The -levers`16 y'are alsoconnected at 1.9 to the yokes 12; A handle 2O y connected toy one of the'levers 16, so that bythe movement of said handle the levers and yokeswill be operated simultaneously.

I provide a `counter-balance to aid in the ease of the operation of thevmovement of the y,

valve, andv accordingly a chain 21 is connected to the valve handle 29,vsaid chain passingbetween thesheaves 22, thence over the sheaves 23and`24f, the weight 25 being connected to they outer end of said chain.

' A suitable door 26 is provided for access tothe valve. n l

`In order to keep the parts of the apparatus cool, the water-box 27 isprovided,

valve 5 will be raised and the rollers 14 p will move over thearc-shapedy tracks 15, whereupon the valve yis lowered into thewaterseal 7 surrounding the stack-Hue 3, as clearly shownin dottedlines, Fig. 1.

Referring to Fig. 1, the connection at 19 between the'` levers 16 andthe valve 5` is kand with the water level maintained as at slightly tothe right of the center of gravity of the valve, so that the rollers 14:will carry a portion ofthe weight of the valve; By

thisarrangement the levers 16 carry most of the weight ofthe valve whenit is being shifted, but suiiicient weight is inposed upon the rollers14 so that they will serve, together with the track 15, to guide thevalve 5 in such manner that it is maintained in al quently is not highlyheated, and when movf ed to close the stack-nue it is'low down and .outof the direct path of the hot gases, and

that When one is raised the other is lowered.

As the hood A covers the gas or air flue, one Waste gas flue to thestack, and one flue from the valve to the furnace, known as the furnaceflue, the said hood is filled With gas or air at one period, and with.Waste gas at another period, which makes it a three-flue reversingvalve.

By the use of a single valve of a 10W `flat type, I greatly prolong thelife of the valve,

and at the same time reduce the cost of original constructionV by makingone valve take the place of tvvo.

It Will ofcourse be understood by those skilled in the art that what isillustrated in Figs. l and 2 is only one-,half the equipment for eachfurnace, and that the above described parts Will be duplicated tomake acomplete equipment for each furnace.

l. In valve reversing mechanism for furnaces, the combination of a hoodcovering three distinct llues, a single valve covering a single flue,Vand means for sl'iifting said valvey from the gas or air flue to thestack flue, and vice-versa.

said cover.

'2. In valve reversing mechanism for furnaces, the combination of a hoodcovering three distinct flues, a single low flat valve coveringa singleflue, and means for shifting the said valve from the gas or air Hue tothe stack iiue, and vice-versa. n

3. In valve reversing mechanism, the combination with a cover member, oflevers connected to opposite sides of said cover member, at pointsoffset with respect to a transverse center line of gravity of said covermember, a roller carried by said cover ineinber,'and an arcuate trackWith which said roller may co-.operate to support a portion of thenfeight of said cover and guide the same When said levers are beingshifted `to move 4i. In valve reversing mechanism for furnace's, thecombination with a shiftable valve member, of a lever pivotallysupported at one end and connected to said valve member at a pointroffset With respect lto the center of gravity thereof, pair of rollersconnected tosaid valve member and adapted to support a ,portion of theWeight thereof, and a track of arcuate form with which said rollersco-operate to partially support and guide said valve member when it isbeing shifted by movement of said lever.`

In testimony whereof I, the said NICHOLAS F. EGLER, have hereunto set myhand.

NICHOLAS F. EGLER.

